#6A57D1
Closest named color: Slate Blue (#6A5ACD). oklch(54.1% 0.181 285.8), rgb(106, 87, 209).
Aa
White text reads best on this color (5.38:1).
About this color
#6A57D1 is a medium-dark, vivid purple. In OKLCH its lightness is 54%, its chroma 0.181 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Slate Blue (#6A5ACD), ΔE 0.010 away. White text reads best on it, at 5.38:1.
| Hue family | Purples |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.181) |
| Temperature | cool |
| Nearest name | Slate Blue (#6A5ACD) |
| Black text | 3.89:1 |
| White text | 5.38:1 |
Values
| HEX | #6A57D1 |
| RGB | rgb(106, 87, 209) |
| HSL | hsl(249, 57%, 58%) |
| OKLCH | oklch(54.1% 0.181 285.8) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #6A57D1 | 5.38:1 | AA | Lc -81.8 | Fine for body text |
| Black text on #6A57D1 | 3.89:1 | AA large text | Lc 27.6 | Dividers and decoration only |
| #6A57D1 text on white | 5.38:1 | AA | Lc 76.5 | Fine for body text |
| #6A57D1 text on black | 3.89:1 | AA large text | Lc -25.3 | Dividers and decoration only |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 600.
-
Step 50
50
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E8E8F9
oklch(93.6% 0.023 286)
-
Step 200
200
#D6D5F6
oklch(88.4% 0.045 286.8)
-
Step 300
300
#BBBAF3
oklch(81% 0.08 285.3)
-
Step 400
400
#9A93EE
oklch(70.6% 0.131 286)
-
Step 500
500
#8376E8
oklch(63.1% 0.166 285.8)
-
Step 600
600 (this color)
#6A57D1
oklch(54.1% 0.181 285.8)
-
Step 700
700
#5C4ABA
oklch(49% 0.169 285.7)
-
Step 800
800
#4B3E96
oklch(42.7% 0.139 285.7)
-
Step 900
900
#3E3678
oklch(37.8% 0.109 285.5)
-
Step 950
950
#242046
oklch(27% 0.069 285.6)
#6A57D1 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #006ED5 | 0.096 |
| Deuteranopia (no green cones) | #0067CE | 0.094 |
| Tritanopia (no blue cones) | #45738C | 0.150 |
| Achromatopsia (no color) | #6A6A6A | 0.181 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6A57D1
#6A57D1
oklch(54.1% 0.181 285.8)
- #797200
#797200
oklch(54.1% 0.115 105.4)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #6A57D1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Blue #6A5ACD ΔE 0.010
- Light Indigo #6D5ACF ΔE 0.010
- Dark Periwinkle #665FD1 ΔE 0.019
- Iris #6258C4 ΔE 0.024
- Warm Blue #4B57DB ΔE 0.047
- Bluey Purple #6241C7 ΔE 0.052
- Purpley #8756E4 ΔE 0.056
- Medium Slate Blue #7B68EE ΔE 0.065
Use #6A57D1 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.